US20170026756A1 - Speaker - Google Patents
Speaker Download PDFInfo
- Publication number
- US20170026756A1 US20170026756A1 US15/080,364 US201615080364A US2017026756A1 US 20170026756 A1 US20170026756 A1 US 20170026756A1 US 201615080364 A US201615080364 A US 201615080364A US 2017026756 A1 US2017026756 A1 US 2017026756A1
- Authority
- US
- United States
- Prior art keywords
- speaker
- membrane
- main body
- vibration part
- recess portion
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 239000012528 membrane Substances 0.000 claims abstract description 37
- 230000000694 effects Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
Images
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R9/00—Transducers of moving-coil, moving-strip, or moving-wire type
- H04R9/02—Details
- H04R9/04—Construction, mounting, or centering of coil
- H04R9/045—Mounting
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R1/00—Details of transducers, loudspeakers or microphones
- H04R1/20—Arrangements for obtaining desired frequency or directional characteristics
- H04R1/22—Arrangements for obtaining desired frequency or directional characteristics for obtaining desired frequency characteristic only
- H04R1/28—Transducer mountings or enclosures modified by provision of mechanical or acoustic impedances, e.g. resonator, damping means
- H04R1/2803—Transducer mountings or enclosures modified by provision of mechanical or acoustic impedances, e.g. resonator, damping means for loudspeaker transducers
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R9/00—Transducers of moving-coil, moving-strip, or moving-wire type
- H04R9/06—Loudspeakers
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04S—STEREOPHONIC SYSTEMS
- H04S7/00—Indicating arrangements; Control arrangements, e.g. balance control
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R2499/00—Aspects covered by H04R or H04S not otherwise provided for in their subgroups
- H04R2499/10—General applications
- H04R2499/11—Transducers incorporated or for use in hand-held devices, e.g. mobile phones, PDA's, camera's
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04S—STEREOPHONIC SYSTEMS
- H04S2420/00—Techniques used stereophonic systems covered by H04S but not provided for in its groups
- H04S2420/01—Enhancing the perception of the sound image or of the spatial distribution using head related transfer functions [HRTF's] or equivalents thereof, e.g. interaural time difference [ITD] or interaural level difference [ILD]
Definitions
- the present disclosure relates to electro-acoustic converting technologies, and more particularly, to a speaker applicable to a mobile device for producing audible sound.
- a related speaker includes a vibration system, a magnetic system, and a holder for holding the vibration system and the magnetic system.
- the magnetic system includes a magnet module, a pole plate and a yoke for receiving the magnet module and the pole plate; the magnet module is located between the pole plate and the yoke.
- the vibration system includes a membrane and a dome, the dome is attached on the membrane, and the membrane is further placed on the pole plate of the magnetic system.
- a main body of the membrane, the dome and the pole plate are all in a plate shape.
- a high frequency response effect of the speaker is low, and this may further decrease an acoustic performance of the speaker.
- FIG. 1 is an exploded view of a speaker according to a first embodiment of the present disclosure
- FIG. 2 is an assembled view of the speaker of FIG. 1 ;
- FIG. 3 is a cross-sectional view of the speaker of FIG. 2 , taken along line III-III;
- FIG. 4 is a cross-sectional view of the speaker of FIG. 2 with an alternative configuration
- FIG. 5 is an exploded view of a speaker according to a second embodiment of the present disclosure.
- the speaker 1 may be a micro speaker applicable to a mobile device such as a mobile phone, a personal digital assistant, a tablet computer, a laptop computer, or the like.
- the speaker 1 includes a magnetic system 11 , a vibration system 13 and a holder 15 for holding the magnetic system 11 and the vibration system 13 .
- the magnetic system 11 includes a pole plate 111 , a magnet 113 and a yoke 115 .
- the yoke 115 includes a bottom and a plurality of sidewalls; the sidewalls extend perpendicularly from the bottom for forming a receiving space for receiving the magnet 113 and the pole plate 111 .
- the magnet 113 is located between the pole plate 111 and the bottom of the yoke 115 , and is in a plate or block shape with a plurality of side surfaces facing the sidewalls of the yoke 115 .
- An outer size of the magnet 113 is smaller than an inner size of the receiving space, and thus magnetic gaps are formed between the side surfaces of the magnetic 113 and the sidewalls of the yoke 115 .
- the vibration system 13 includes a vibration part 131 , a membrane 133 and a voice coil 135 .
- the voice coil 135 is suspended in the magnetic gaps, and an upper end of the voice coil 135 is connected to a bottom surface of the membrane 133 .
- the membrane 133 includes a main body 1331 at a central portion thereof, and a periphery portion 1333 surrounding the main body 1331 .
- the vibration part 131 may be a dome attached on an upper surface of the main body 1331 .
- the main body 1331 of the membrane 133 includes a recess portion 13311 recessed downwards (i.e., towards the voice coil 135 ), and the vibration part 131 includes a protrusion 1311 protruding upwards (i.e., away from the voice coil 135 ) in a corresponding region to the recess portion 13311 .
- the pole plate 111 is located under the main body 1331 of the membrane 133 , and includes a top surface 1111 adjacent to the main body 1331 , and a bottom surface 1112 opposite of the top surface 1111 .
- a groove 1113 is formed at the top surface 1111 of the pole plate 111 ; the groove 1113 extends downwards from the top surface 111 to the bottom surface 1112 of the pole plate 111 , without penetrating the bottom surface 1112 of the pole plate 111 .
- the groove 1113 corresponds to the recess portion 13311 of the membrane 133 , and may be used to receive the recess portion 13311 when the membrane 133 is driven to perform vibration.
- the speaker 1 may be assembled as below. Firstly, the bottom surface 1112 of the pole plate 111 may be attached to a main surface of the magnet 113 , and the magnet 113 together with the pole plate 111 is supported by the bottom plate of the yoke 115 , to form the magnetic gaps between the magnet 113 and the sidewalls of the yoke 115 . Secondly, the magnetic system 11 is received and held by the holder 15 , and the vibration part 131 is attached on the upper surface of the main body 1331 of the membrane 133 , so that the protrusion 1311 of the vibration part 131 is arranged opposite to the recess portion 13311 of the membrane 133 . Furthermore, the upper end of the voice coil 135 is connected to the membrane 133 and the voice coil 135 is suspended in the magnetic gaps; and in addition, the periphery portion 1333 of the membrane 133 is adhered to an edge of the holder 15 .
- the voice coil 135 receives a driving current signal and is driven to move in the magnetic gaps due to Lorentz force; a direction of the driving current signal changes periodically, which causes a movement direction of the voice coil 135 to be changed correspondingly, and therefore the voice coil 135 is driven to perform reciprocating motion in the magnetic gaps.
- the movement of the voice coil 135 further drives the membrane 133 to vibrate and produce audible sound.
- the groove 1113 of the pole plate 111 may be replaced by a through hole 1115 ; the through hole 1115 also corresponds to the recess portion 13311 of the membrane 133 , and extends downwards from the top surface 111 of the pole plate 111 and penetrates through the bottom surface 1112 of the pole plate 111 .
- the through hole 1115 may also be used to receive the recess portion 13311 when the membrane 133 is driven to perform vibration.
- the protrusion 1311 of the vibration part 131 and the recess portion 13311 of the membrane 133 can expend a high frequency response effect of the speaker 1 to ensure the speaker 1 has a higher cut-off frequency in a high frequency band thereof. Therefore, an acoustic performance of the speaker 1 can be improved.
- the groove 1113 or the through hole 1115 formed in the pole plate 111 can provide an extra vibration space for the membrane 133 ; this can further improve a sensitivity of the speaker 1 .
- FIG. 5 is an exploded view of a speaker according to a second embodiment of the present disclosure.
- the speaker 2 is similar to the above-described speaker 1 as illustrated in FIGS. 1-4 but have some different in configuration as described below.
- the speaker 2 also includes a magnetic system 21 , a vibration system 23 and a holder 25 for holding the magnetic system 21 and the vibration system 23 ;
- the magnetic system 11 has a configuration substantially same as the magnetic system 11 , and also includes a pole plate 211 , a magnet 213 and a yoke 215 .
- the vibration system 23 also includes a vibration part 231 , a voice coil 235 , and a membrane 233 having a main body 2331 and a periphery portion 2333 surrounding the main body 2331 .
- the vibration part 231 is attached on a bottom surface of main body 2331 of the membrane 233 , rather than to an upper surface thereof.
- the main body 2331 of the membrane 233 includes a protrusion 23311 protruding away from the voice coil 235
- the vibration part 231 includes a recess portion 2311 recessed towards the voice coil 235 .
- the pole plate 211 may also include a groove or a through hole for receiving the recess portion 2311 of the vibration part 231 .
Abstract
Description
- The present disclosure relates to electro-acoustic converting technologies, and more particularly, to a speaker applicable to a mobile device for producing audible sound.
- Speakers are widely applied in mobile devices, such as mobile phones, tablet computers or laptop computers, for converting electrical signals into audible sounds. A related speaker includes a vibration system, a magnetic system, and a holder for holding the vibration system and the magnetic system. The magnetic system includes a magnet module, a pole plate and a yoke for receiving the magnet module and the pole plate; the magnet module is located between the pole plate and the yoke. The vibration system includes a membrane and a dome, the dome is attached on the membrane, and the membrane is further placed on the pole plate of the magnetic system.
- In the above-described speaker, a main body of the membrane, the dome and the pole plate are all in a plate shape. However, with this configuration, a high frequency response effect of the speaker is low, and this may further decrease an acoustic performance of the speaker.
- Therefore, it is desired to provide a new speaker which can overcome the aforesaid problems.
- Many aspects of the embodiment can be better understood with reference to the following drawings. The components in the drawing are not necessarily drawn to scale, the emphasis instead being placed upon clearly illustrating the principles of the present disclosure. Moreover, in the drawings, like reference numerals designate corresponding parts throughout the several views.
-
FIG. 1 is an exploded view of a speaker according to a first embodiment of the present disclosure; -
FIG. 2 is an assembled view of the speaker ofFIG. 1 ; -
FIG. 3 is a cross-sectional view of the speaker ofFIG. 2 , taken along line III-III; -
FIG. 4 is a cross-sectional view of the speaker ofFIG. 2 with an alternative configuration; -
FIG. 5 is an exploded view of a speaker according to a second embodiment of the present disclosure. - The present disclosure will be described in detail below with reference to the attached drawings and the embodiment thereof.
- Referring to
FIGS. 1-2 , aspeaker 1 according to a first embodiment of the present disclosure is shown. Thespeaker 1 may be a micro speaker applicable to a mobile device such as a mobile phone, a personal digital assistant, a tablet computer, a laptop computer, or the like. Thespeaker 1 includes amagnetic system 11, avibration system 13 and aholder 15 for holding themagnetic system 11 and thevibration system 13. - The
magnetic system 11 includes apole plate 111, amagnet 113 and ayoke 115. Theyoke 115 includes a bottom and a plurality of sidewalls; the sidewalls extend perpendicularly from the bottom for forming a receiving space for receiving themagnet 113 and thepole plate 111. Themagnet 113 is located between thepole plate 111 and the bottom of theyoke 115, and is in a plate or block shape with a plurality of side surfaces facing the sidewalls of theyoke 115. An outer size of themagnet 113 is smaller than an inner size of the receiving space, and thus magnetic gaps are formed between the side surfaces of the magnetic 113 and the sidewalls of theyoke 115. - The
vibration system 13 includes avibration part 131, amembrane 133 and avoice coil 135. Thevoice coil 135 is suspended in the magnetic gaps, and an upper end of thevoice coil 135 is connected to a bottom surface of themembrane 133. Themembrane 133 includes amain body 1331 at a central portion thereof, and aperiphery portion 1333 surrounding themain body 1331. Thevibration part 131 may be a dome attached on an upper surface of themain body 1331. - Moreover, in the speaker 100 according to the present disclosure, the
main body 1331 of themembrane 133 includes arecess portion 13311 recessed downwards (i.e., towards the voice coil 135), and thevibration part 131 includes aprotrusion 1311 protruding upwards (i.e., away from the voice coil 135) in a corresponding region to therecess portion 13311. - Referring also to
FIG. 3 , in the present embodiment, thepole plate 111 is located under themain body 1331 of themembrane 133, and includes atop surface 1111 adjacent to themain body 1331, and abottom surface 1112 opposite of thetop surface 1111. Agroove 1113 is formed at thetop surface 1111 of thepole plate 111; thegroove 1113 extends downwards from thetop surface 111 to thebottom surface 1112 of thepole plate 111, without penetrating thebottom surface 1112 of thepole plate 111. Thegroove 1113 corresponds to therecess portion 13311 of themembrane 133, and may be used to receive therecess portion 13311 when themembrane 133 is driven to perform vibration. - The
speaker 1 may be assembled as below. Firstly, thebottom surface 1112 of thepole plate 111 may be attached to a main surface of themagnet 113, and themagnet 113 together with thepole plate 111 is supported by the bottom plate of theyoke 115, to form the magnetic gaps between themagnet 113 and the sidewalls of theyoke 115. Secondly, themagnetic system 11 is received and held by theholder 15, and thevibration part 131 is attached on the upper surface of themain body 1331 of themembrane 133, so that theprotrusion 1311 of thevibration part 131 is arranged opposite to therecess portion 13311 of themembrane 133. Furthermore, the upper end of thevoice coil 135 is connected to themembrane 133 and thevoice coil 135 is suspended in the magnetic gaps; and in addition, theperiphery portion 1333 of themembrane 133 is adhered to an edge of theholder 15. - In operation, the
voice coil 135 receives a driving current signal and is driven to move in the magnetic gaps due to Lorentz force; a direction of the driving current signal changes periodically, which causes a movement direction of thevoice coil 135 to be changed correspondingly, and therefore thevoice coil 135 is driven to perform reciprocating motion in the magnetic gaps. The movement of thevoice coil 135 further drives themembrane 133 to vibrate and produce audible sound. - Alternatively, as illustrated in
FIG. 4 , thegroove 1113 of thepole plate 111 may be replaced by athrough hole 1115; the throughhole 1115 also corresponds to therecess portion 13311 of themembrane 133, and extends downwards from thetop surface 111 of thepole plate 111 and penetrates through thebottom surface 1112 of thepole plate 111. The throughhole 1115 may also be used to receive therecess portion 13311 when themembrane 133 is driven to perform vibration. - In the
speaker 1 as provided in the present embodiment, theprotrusion 1311 of thevibration part 131 and therecess portion 13311 of themembrane 133 can expend a high frequency response effect of thespeaker 1 to ensure thespeaker 1 has a higher cut-off frequency in a high frequency band thereof. Therefore, an acoustic performance of thespeaker 1 can be improved. Moreover, thegroove 1113 or the throughhole 1115 formed in thepole plate 111 can provide an extra vibration space for themembrane 133; this can further improve a sensitivity of thespeaker 1. -
FIG. 5 is an exploded view of a speaker according to a second embodiment of the present disclosure. The speaker 2 is similar to the above-describedspeaker 1 as illustrated inFIGS. 1-4 but have some different in configuration as described below. - Specifically, the speaker 2 also includes a
magnetic system 21, avibration system 23 and aholder 25 for holding themagnetic system 21 and thevibration system 23; themagnetic system 11 has a configuration substantially same as themagnetic system 11, and also includes apole plate 211, amagnet 213 and ayoke 215. Thevibration system 23 also includes avibration part 231, avoice coil 235, and amembrane 233 having amain body 2331 and aperiphery portion 2333 surrounding themain body 2331. - However, in the speaker 2 as provided in the present embodiment, the
vibration part 231 is attached on a bottom surface ofmain body 2331 of themembrane 233, rather than to an upper surface thereof. Moreover, in thevibration system 23, themain body 2331 of themembrane 233 includes aprotrusion 23311 protruding away from thevoice coil 235, while thevibration part 231 includes arecess portion 2311 recessed towards thevoice coil 235. In addition, thepole plate 211 may also include a groove or a through hole for receiving therecess portion 2311 of thevibration part 231. - It is to be understood, however, that even though numerous characteristics and advantages of the present embodiment have been set forth in the foregoing description, together with details of the structures and functions of the embodiment, the disclosure is illustrative only, and changes may be made in detail, especially in matters of shape, size, and arrangement of parts within the principles of the invention to the full extent indicated by the broad general meaning of the terms in which the appended claims are expressed.
Claims (10)
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN201520546204.5U CN204887417U (en) | 2015-07-24 | 2015-07-24 | Loudspeaker |
CN201520546204U | 2015-07-24 | ||
CN201520546204.5 | 2015-07-24 |
Publications (2)
Publication Number | Publication Date |
---|---|
US20170026756A1 true US20170026756A1 (en) | 2017-01-26 |
US9813819B2 US9813819B2 (en) | 2017-11-07 |
Family
ID=54831735
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US15/080,364 Expired - Fee Related US9813819B2 (en) | 2015-07-24 | 2016-03-24 | Speaker |
Country Status (2)
Country | Link |
---|---|
US (1) | US9813819B2 (en) |
CN (1) | CN204887417U (en) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN207638869U (en) * | 2017-11-30 | 2018-07-20 | 歌尔科技有限公司 | A kind of electronic equipment |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20100177927A1 (en) * | 2006-09-29 | 2010-07-15 | Matsushita Electric Industrial Co., Ltd. | Loudspeaker and electronic apparatus using the same |
US20120170793A1 (en) * | 2011-01-05 | 2012-07-05 | Aac Acoustic Technologies (Shenzhen) Co., Ltd. | Micro-speaker |
US20140056464A1 (en) * | 2012-08-27 | 2014-02-27 | AAC Microtech(Changzhou) Co., Ltd. | Micro-Speaker |
US20140241566A1 (en) * | 2013-02-22 | 2014-08-28 | Em-Tech Co., Ltd. | Inner Ring Magnet Type Microspeaker |
-
2015
- 2015-07-24 CN CN201520546204.5U patent/CN204887417U/en not_active Ceased
-
2016
- 2016-03-24 US US15/080,364 patent/US9813819B2/en not_active Expired - Fee Related
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20100177927A1 (en) * | 2006-09-29 | 2010-07-15 | Matsushita Electric Industrial Co., Ltd. | Loudspeaker and electronic apparatus using the same |
US20120170793A1 (en) * | 2011-01-05 | 2012-07-05 | Aac Acoustic Technologies (Shenzhen) Co., Ltd. | Micro-speaker |
US20140056464A1 (en) * | 2012-08-27 | 2014-02-27 | AAC Microtech(Changzhou) Co., Ltd. | Micro-Speaker |
US20140241566A1 (en) * | 2013-02-22 | 2014-08-28 | Em-Tech Co., Ltd. | Inner Ring Magnet Type Microspeaker |
Also Published As
Publication number | Publication date |
---|---|
US9813819B2 (en) | 2017-11-07 |
CN204887417U (en) | 2015-12-16 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
US9338535B2 (en) | Micro-speaker | |
US9386377B2 (en) | Magnetic assembly and electro-acoustic transducer using same | |
US9807512B2 (en) | Speaker | |
US20160127820A1 (en) | Piezoelectric ceramic dual-frequency earphone structure | |
US9774955B2 (en) | Speaker | |
US9154884B2 (en) | Electro-acoustic transducer | |
US9918166B2 (en) | Speaker | |
US9774956B2 (en) | Speaker | |
US9998833B2 (en) | Speaker | |
US10932050B2 (en) | Micro-speaker | |
US20110255732A1 (en) | Multifunctional micro speaker | |
KR101057078B1 (en) | Multifunction micro speaker | |
US9820052B2 (en) | Speaker | |
US9426594B2 (en) | Miniature speaker | |
US9277326B2 (en) | Miniature speaker | |
US9456281B2 (en) | Miniature speaker | |
US20170034626A1 (en) | Speaker | |
US9338534B2 (en) | Miniature speaker | |
US9621992B2 (en) | Speaker | |
US9426577B2 (en) | Magnetic assembly for speaker | |
US9578421B2 (en) | Miniature speaker | |
US20130287244A1 (en) | Loudspeaker with reinforced frame | |
US11076240B2 (en) | Speaker | |
US9648406B2 (en) | Speaker | |
US9813819B2 (en) | Speaker |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
AS | Assignment |
Owner name: AAC TECHNOLOGIES PTE. LTD., SINGAPORE Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:ZHANG, RUI;ZHANG, LONG;REEL/FRAME:043037/0729 Effective date: 20160128 |
|
STCF | Information on status: patent grant |
Free format text: PATENTED CASE |
|
FEPP | Fee payment procedure |
Free format text: MAINTENANCE FEE REMINDER MAILED (ORIGINAL EVENT CODE: REM.); ENTITY STATUS OF PATENT OWNER: LARGE ENTITY |
|
LAPS | Lapse for failure to pay maintenance fees |
Free format text: PATENT EXPIRED FOR FAILURE TO PAY MAINTENANCE FEES (ORIGINAL EVENT CODE: EXP.); ENTITY STATUS OF PATENT OWNER: LARGE ENTITY |
|
STCH | Information on status: patent discontinuation |
Free format text: PATENT EXPIRED DUE TO NONPAYMENT OF MAINTENANCE FEES UNDER 37 CFR 1.362 |
|
FP | Lapsed due to failure to pay maintenance fee |
Effective date: 20211107 |